Examples of ExifReader

Examples of com.drew.metadata.exif.ExifReader

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    }

    public void testThumbnailLength() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        assertEquals(2970, directory.getInt(ExifDirectory.TAG_THUMBNAIL_LENGTH));
    }
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Examples of com.drew.metadata.exif.ExifReader

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    }

    public void testDateTime() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        assertEquals("2002:11:27 18:00:35", directory.getString(ExifDirectory.TAG_DATETIME));
    }
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Examples of com.drew.metadata.exif.ExifReader

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    }

    public void testXResolution() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        Rational rational = directory.getRational(ExifDirectory.TAG_X_RESOLUTION);
        assertEquals(72, rational.getNumerator());
        assertEquals(1, rational.getDenominator());
    }
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Examples of com.drew.metadata.exif.ExifReader

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    }

    public void testYResolution() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        Rational rational = directory.getRational(ExifDirectory.TAG_Y_RESOLUTION);
        assertEquals(72, rational.getNumerator());
        assertEquals(1, rational.getDenominator());
    }
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Examples of com.drew.metadata.exif.ExifReader

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    }

    public void testCompression() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        // 6 means JPEG compression
        assertEquals(6, directory.getInt(ExifDirectory.TAG_COMPRESSION));
    }
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Examples of com.drew.metadata.exif.ExifReader

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    {
        // an error has been discovered in Exif data segments where a directory is referenced
        // repeatedly.  thanks to Alistair Dickie for providing the sample image used in this
        // unit test.
        File metadataFile = new File("src/com/drew/metadata/exif/test/recursiveDirectories.metadata");
        Metadata metadata = new ExifReader(JpegSegmentData.FromFile(metadataFile)).extract();
        metadata.getDirectory(ExifDirectory.class);
//        String fileName = "src/com/drew/metadata/exif/test/recursiveDirectories.jpg";
//        Metadata metadata = new ExifReader(new File(fileName)).extract();
//        metadata.getDirectory(ExifDirectory.class);
    }
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Examples of com.drew.metadata.exif.ExifReader

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    public static Metadata extractMetadataFromJpegSegmentReader(JpegSegmentReader segmentReader)
    {
        final Metadata metadata = new Metadata();
        try {
            byte[] exifSegment = segmentReader.readSegment(JpegSegmentReader.SEGMENT_APP1);
            new ExifReader(exifSegment).extract(metadata);
        } catch (JpegProcessingException e) {
            // in the interests of catching as much data as possible, continue
            // TODO lodge error message within exif directory?
        }
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Examples of com.drew.metadata.exif.ExifReader

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         * because markers can theoretically appear multiple times in the file.
         */
        // TODO test this method
        byte[][] exifSegment = decodeParam.getMarkerData(JPEGDecodeParam.APP1_MARKER);
        if (exifSegment != null && exifSegment[0].length>0) {
            new ExifReader(exifSegment[0]).extract(metadata);
        }

        // similarly, use only the first IPTC segment
        byte[][] iptcSegment = decodeParam.getMarkerData(JPEGDecodeParam.APPD_MARKER);
        if (iptcSegment != null && iptcSegment[0].length>0) {
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Examples of com.drew.metadata.exif.ExifReader

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        // This approach shows using individual MetadataReader implementations
        // to read a file.  This is less efficient than approach 1, as the file
        // is opened and read twice.
        try {
            Metadata metadata = new Metadata();
            new ExifReader(jpegFile).extract(metadata);
            new IptcReader(jpegFile).extract(metadata);
            printImageTags(2, metadata);
        } catch (JpegProcessingException jpe) {
            System.err.println("error 2a");
        }

        // Approach 3
        // As fast as approach 1 (this is what goes on inside the JpegMetadataReader's
        // readMetadata() method), this code is handy if you want to look into other
        // Jpeg segments too.
        try {
            JpegSegmentReader segmentReader = new JpegSegmentReader(jpegFile);
            byte[] exifSegment = segmentReader.readSegment(JpegSegmentReader.SEGMENT_APP1);
            byte[] iptcSegment = segmentReader.readSegment(JpegSegmentReader.SEGMENT_APPD);
            Metadata metadata = new Metadata();
            new ExifReader(exifSegment).extract(metadata);
            new IptcReader(iptcSegment).extract(metadata);
            printImageTags(3, metadata);
        } catch (JpegProcessingException jpe) {
            System.err.println("error 3a");
        }
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Examples of com.drew.metadata.exif.ExifReader

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    private void validateMultipleSegmentRead(JpegSegmentReader reader) throws JpegProcessingException
    {
        byte[] iptcData = reader.readSegment(JpegSegmentReader.SEGMENT_APPD);
        byte[] exifData = reader.readSegment(JpegSegmentReader.SEGMENT_APP1);
        assertTrue("exif data too short", exifData.length > 4);
        new ExifReader(exifData).extract();
        new IptcReader(iptcData).extract();
        assertEquals("Exif", new String(exifData, 0, 4));
    }
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